/*
 * Copyright:  2018 smarabbit studio.
 *
 *  Licensed under the Confluent Community License; you may not use this file
 *  except in compliance with the License.  You may obtain a copy of the License at
 *
 *  http://www.confluent.io/confluent-community-license
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 *  WARRANTIES OF ANY KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations under the License.
 *
 *  @作   者： 黄开晖 (117227773@qq.com)
 *  @日   期:  2021年6月5日
 */
package com.massyframework.beanskin.sample;

import java.util.List;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Stream;

/**
 * 待办事项资源库
 * @author huangkh
 *
 */
public interface ToDoItemRepository {
	
	/**
	 * 查找{@code id}对应的待办事项
	 * @param id {@link long},待办事项编号
	 * @return {@link ToDoItemDomain}
	 */
	ToDoItem findById(long id);

	/**
	 * 所有待办事项
	 * @return {@link List}
	 */
	List<ToDoItem> getToDoItems();
	
	/**
	 * 所有满足{@code filter}条件的待办事项
	 * @param filter {@link Predicate},过滤条件
	 * @return {@link List}
	 */
	List<ToDoItem> getToDoItems(Predicate<ToDoItem> filter);
	
	/**
	 * 执行{@code action}操作的待办事项结果
	 * @param action {@link Function}, 函数
	 * @return {@link List}
	 */
	List<ToDoItem> getToDoItems(Function<Stream<ToDoItem>, Stream<ToDoItem>> action);
	
	/**
	 * 待办事项总数
	 * @return {@link int}
	 */
	int size();
}
